There is another reason, besides economy of effort, why we so often hold to our stereotypes when we might pursue a more disinterested vision. The systems of stereotypes may be the core of our personal tradition, the defenses of our position in society. […]
No wonder, then, that any disturbance of the stereotypes seems like an attack upon the foundations of the universe. It is an attack upon the foundations of our universe, and, where big things are at stake, we do not readily admit that there is any distinction between our universe and the universe. A world which turns out to be one in which those we honor are unworthy, and those we despise are noble, is nerve-wracking. There is anarchy if our order of precedence is not the only possible one. […]
A pattern of stereotypes is not neutral. It is not merely a way of substituting order for the great blooming, buzzing confusion of reality. It is not merely a short cute. It is all these things and something more. It is the guarantee of our self-respect; it is the projection upon the world of our own sense of our own value, our own position and our own rights. The stereotypes are, therefore, highly charged with the feelings that are attached to them. They are the fortress of our tradition, and behind its defenses we can continue to feel ourselves safe in the position we occupy.
Walter Lippmann, Public Opinion (1922), pg. 95-96.